Biodiversity Heritage Library
By "Potts, Edward. "
Fresh water sponges; a monograph, by Edward Potts, including "Diagnosis of European spongillidae," by Franz Vejdovsky.
By: Potts, Edward. - Vejdovský, Frantisek, - Academy of Natural Sciences of Philadelphia.
Publication info: Philadelphia,Academy of Natural Sciences,1887.
Contributed by: Smithsonian Libraries